Saturday, 13 June 2015

OSVDB 119342, 119323 NetCat CMS Multiple HTTP Response Splitting (CRLF) Web Security VulnerabilitiesExploit Title: NetCat CMS Multiple CRLF Security VulnerabilitiesProduct: NetCat CMS (Content Management System)Vendor: NetCatVulnerable Versions: 5.01 3.12 3.0 2.4 2.3 2.2 2.1 2.0 1.1Tested Version: 3.12Advisory Publication: March 07, 2015Latest Update: March 07, 2015Vulnerability Type: Improper Neutralization of CRLF Sequences ('CRLF Injection') [CWE-93]CVE Reference: *OSVDB Reference: 119342, 119343Impact CVSS Severity (version 2.0):CVSS v2 Base Score: 4.3 (MEDIUM) (AV:N/AC:M/Au:N/C:N/I:P/A:N) (legend)Impact Subscore: 2.9Exploitability Subscore: 8.6CVSS Version 2 Metrics:Access Vector: Network exploitable; Victim must voluntarily interact with attack mechanismAccess Complexity: MediumAuthentication: Not required to exploitImpact Type: Allows unauthorized modificationDiscover and Author: Jing Wang, Division of Mathematical Sciences (MAS), School of Physical and Mathematical Sciences (SPMS), Nanyang Technological University (NTU), Singapore. (@justqdjing)Advisory Details:(1) Vendor & Product Description:Vendor:NetCatProduct & Version:NetCat5.01 3.12 3.0 2.4 2.3 2.2 2.1 2.0 1.1Vendor URL & Download:NetCat can be got from here,http://netcat.ru/Product Introduction:NetCat.ru is russian local company. "NetCat designed to create an absolute majority of the types of sites: from simple "business card" with a minimum content to complex web-based systems, from corporate offices to online stores, libraries or media data - in other words, projects completely different directions and at any level of complexity. View examples of sites running on NetCat CMS can be in a special section.""Manage the site on the basis of NetCat can even inexperienced user, because it does not require knowledge of Internet technologies, programming and markup languages. NetCat constantly improving, adds new features. In the process of finalizing necessarily take into account the wishes of our partners and clients, as well as trends in Internet development. More than 2,000 studios and private web developers have chosen for their projects is NetCat, and in 2013 sites, successfully working on our CMS, created more than 18,000."(2) Vulnerability Details:NetCat web application has a computer security bug problem. It can be exploited by HTTP Response Splitting (CRLF) attacks. This could allow a remote attacker to insert arbitrary HTTP headers, which are included in a response sent to the server. If an application does not properly filter such a request, it could be used to inject additional headers that manipulate cookies, authentication status, or more.

Several other similar products 0-day vulnerabilities have been found by some other bug hunter researchers before. NetCat has patched some of them. CXSECurity is a huge collection of information on data communications safety. Its main objective is to inform about errors in various applications. It also publishes suggestions, advisories, solutions details related to CRLF vulnerabilities and cyber intelligence recommendations.